I took robaxacet that has iprofen in it 3 hours ago is it safe to take tyenol 500mg now for mouth pain rook the robaxacet to relax the jaw?

Tylenol (acetaminophen) + Ibuprofen: it's okay to combine Tylenol (acetaminophen) and Ibuprofen. They are in two separate drug categories and cleared through two different organs. Tylenol (acetaminophen) is cleared through the liver and Ibuprofen is cleared through the kidneys. It's good practice to know what is in combo medication when choosing to ad an additional drug so you don't over medicate on one particular medication.